{"title":"Prediction of Dissolved Oxygen from pH and Water Temperature in Aquaculture Prawn Ponds","authors":"J. Dabrowski, Ashfaqur Rahman, A. George","doi":"10.1145/3314487.3314488","DOIUrl":"https://doi.org/10.1145/3314487.3314488","url":null,"abstract":"In this study, dissolved oxygen is predicted from pH and water temperature. A linear regression model, a feed forward artificial neural network (ANN), a linear dynamical system (LDS), and a long short term memory (LSTM) recurrent neural network are compared. The LSTM obtains the highest levels of accuracy, whereas the ANN performs poorly in comparison. A key observation is that time dependent models provide superior results. This is significant as the ANN, which does not explicitly model time dependency, is the primary model used in most related studies. Furthermore, a key contribution is a novel approach to applying the LDS for prediction of dissolved oxygen.","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114815982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weixi Mao, Xiaobin Hua, Xiaohang Liu, Jeremiah D. Deng, R. Ohlemüller
{"title":"Ground-based Tree Image Data Mining for Phenology Research","authors":"Weixi Mao, Xiaobin Hua, Xiaohang Liu, Jeremiah D. Deng, R. Ohlemüller","doi":"10.1145/3314487.3314489","DOIUrl":"https://doi.org/10.1145/3314487.3314489","url":null,"abstract":"Previous phenological image analysis works use mostly close-up images or satellite remote sensing images. In this paper we employ ground-based tree images to investigate two related research tasks: colouring trends analysis and tree categorization. In the first task, we extracted a few colour features of image regions of three tree types: exotic deciduous, native non-deciduous, and native deciduous, from photographs taken in a period from spring to summer, to find out whether there are distinguishable colouring trends in different seasons and in different tree types. Statistical tests are carried out to verify the significance of our findings. In the tree categorization work, we examine possible image features that can be utilised for classifying trees into three types. Various classification schemes are explored, including using individual classifiers as well as classifier ensembles such as random forests. The colour trend analysis shows that the two native species have increasingly similar greening and hue from spring to summer, while the two deciduous types have similar change patterns matching their leaf growth trends. The tree categorization result shows that the highest F1 score is over 71% achieved by SVM and Random Forests classifiers. The HSV features are the most effective features for classification.","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","authors":"","doi":"10.1145/3314487","DOIUrl":"https://doi.org/10.1145/3314487","url":null,"abstract":"","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123147417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Partial Solutions for Some Current Challenges in Stream Mining","authors":"B. Pfahringer","doi":"10.1145/3314487.3314492","DOIUrl":"https://doi.org/10.1145/3314487.3314492","url":null,"abstract":"Stream mining is concerned with online learning from non-stationary data sources. In this keynote talk I will argue that many, if not all, big data mining endeavours are instances of stream mining. This presentation will highlight issues in stream mining, including proper evaluation, temporal dependencies, label acquisition, and preprocessing, and will present some preliminary solutions for these challenges.","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Hybrid Load Balance Method Using Evolutionary Computing","authors":"Xin Chi, Jia Yao, Huiming Yu","doi":"10.1145/3314487.3314490","DOIUrl":"https://doi.org/10.1145/3314487.3314490","url":null,"abstract":"Nginx is a commonly used and free open-source web server that is used as a reverse proxy server, load balancer and HTTP cache. It consumes less memory and can handle more clients with less number of processes. Nginx provides users with five predefined load balancing algorithms. However, most of these algorithms are static and some of the load balancing rules are inefficient. In order to make the load of a cluster more stable under high concurrent requests, we developed a Dynamic Load Balancing (DLB) algorithm that uses Nginx as a network security control panel to provide load balancing for a cluster of backend servers. The DLB algorithm is based on the weighted round robin module of Nginx, Logistic Regression and Maximum Likelihood Estimation (MLE) algorithm. It handles the situation of high concurrent requests and reduces the probability of omitted or under-reported incident and status. We also propose a Hybrid Load Balance Method (HLBM) that incorporates the DLB algorithm and evolutionary computing to further improve the performance. We have conducted limited experiment by using dynamic load balancing algorithm. We will complete to develop the Hybrid Load Balance method and conduct experiments for HLBM.","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121802172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ECG Heartbeat Classification: An Exploratory Study","authors":"Loren Kersey, Katinya Lilly, Noel Park","doi":"10.1145/3314487.3314491","DOIUrl":"https://doi.org/10.1145/3314487.3314491","url":null,"abstract":"This paper presents an exploratory study of the ECG heart beat classification problem that employs a number of machine learning models. Using the feature schemes of the state-of-the-art, we investigate the classification both for individual and cross-patient scenarios. A cascade system made of a neural network and a support vector machine is proposed and gives competitive performance on a benchmark dataset.","PeriodicalId":437653,"journal":{"name":"Proceedings of the Australasian Joint Conference on Artificial Intelligence - Workshops","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130257617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}